Simple Durability addon shows warnings in your inventory when you gear is near to breaking. It does this by highlighting pieces of armour and also showing the percentage of durability remaining.

It now also does the same for enchanted weapon charges.

ESO Changes with Dark Brotherhood
If your armour is completely broken there will be an indicator on screen.
If your weapon runs out of charges and has no poison applied there will be an indicator on screen.
Both can be turned off from the normal in game Settings - Interface menu

ESO Changes since Imperial City
Your armour maintains its full AC value until the durability reaches zero. Yay!

Features

You choose if you see a coloured highlight

You choose the colour of the highlight

You choose if you see the percentage remaining

You control when the highlight and percentage appears

You decide if you always want to see the durability percentage on the items no matter how damaged they are

Translated into English, French, German and Japanese

Global settings so you don't have to waste time on each character setting it up

Check out the addon options to set any combination of the above so that it best fits your game play.
Go to the options from the normal menu or use the command /dur

If you have ideas to improve this addon or have found a bug please either post on the comments section of this page or send me a private message.

Could you make this prompt appears only if an equipment durability is below a certain percentage?
Say 20% or 30% would be so nice.
Thank you again.

Thanks for the feedback lukkian!
Yeah I had this idea as well, it would be much more useful if it did that. I will add it to the list of improvements. I have other ideas as well, just need to make the time to make them

I have tested on PTS server and there were no issues there with Simple Durability.
I have released version 2.2 which will work with the current One Tamriel and then Homestead automatically when that is released.

Updated to Dark Brotherhood
I have changed the default armour warning threshold to 20% so that it can give you more time before you have to repair your gear. This will not effect any setting you have already saved.

I need to look to see what I can do about poison charges.

There is 2 features I should mention from Dark Brotherhood, if your armour is completely broken there will now be an indicator on screen. There is also the same thing for weapon enchantments/poisons, if you dont have any charges left and no poisons applied.
These can be turned off from the normal game menus.

Simple Durability does work with Dark Brotherhood as is; apart from the api version number; but I just noticed the "Durability Warning" message on the patch screen. So I want to investigate that before releasing a new version.